Ingredients

  • 1 lemon, halved
  • 9 medium artichokes
  • 1/4 cup extra-virgin olive oil
  • 2 medium onions, cut into 1/2-inch pieces
  • 3 garlic cloves, minced
  • Kosher salt
  • 1 1/4 pounds sunchokes, peeled and cut into 1/2-inch pieces
  • 3/4 cup dry white wine
  • 4 ounces thinly sliced prosciutto
  • 1 cup heavy cream
  • 4 scallions, thinly sliced

Method

  • Squeeze the juice from 1 lemon half into a large bowl of water.
  • Snap off the dark green outer leaves of 1 of the artichokes.
  • Cut 1 inch off the top, then peel the bottom and stem.
  • Halve the artichoke lengthwise and scoop out the furry choke.
  • Cut each half in half lengthwise, then rub the quarters with the remaining lemon half and add them to the lemon water.
  • Repeat the process with the remaining 8 artichokes.
  • In a large enameled cast-iron casserole, heat the oil.
  • Add the onions, garlic and 2 teaspoons of salt and cook over moderate heat, stirring, until softened and light golden, about 15 minutes.
  • Scatter the sunchokes over the onions in an even layer.
  • Drain the artichokes and arrange on top.
  • Pour in the wine and 2 cups of water.
  • Completely cover the vegetables with the prosciutto.
  • Cover the casserole and cook over low heat for 30 minutes.
  • Stir in the cream and sprinkle the scallions on top.
  • Cover and cook until all of the vegetables are tender and the soup has thickened slightly, about 30 minutes longer.
  • Remove from the heat and let stand for 10 minutes.
  • Season with salt and serve.